Technical features:Gear box: EFCS completely in metal reinforced with integrated mosfet.Hop up: adjustable.Motor: long shaft.Gears: completely in steel.Bushes: 8mm in steel (cushions for the central, classic for the sector and the conical).Piston: polycarbonate all steel teeth.Piston head: in anti-vacuum polycarbonate.Cylinder: stainless steel.Cylinder head: in polymer.Spring: 1 joule with quick disassembly.Spingipino: in polymer.Spring guide: in steel.Trigger: Electronic single-stage adjustable.Equipped with coupling plate for the reinforced engine.The control unit is equipped with a safety system that switches off the circuit if it detects a mechanical problem.